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"Uranus (Planet)"
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Planet Uranus
Located 1.7 billion miles away from Earth, Uranus resembles a blue-green sphere floating in the distance. Readers will find out which gases make up the bulk of this faraway planet and why it has only been visited by spacecraft a single time. They will also learn about Uranuss more than two dozen moons and discover how scientists are working to learn more about this remarkable planet.
Book
Uranus and Neptune
A comprehensive, accessible, and stunningly illustrated introduction to these far-off worlds. The most distant planets in our solar system, Uranus and Neptune were unknown by the ancients—Uranus was discovered in the 1780s and Neptune only in the 1840s. Our discovery and observation of both planets have been hampered by their sheer distance from Earth: there has only been one close encounter, Voyager 2 in the late 1980s. The Voyager mission revealed many enticing details about the planets and their moons but also left many more questions unanswered. This book is an informative and accessible introduction to Uranus, Neptune, and their moons. It takes readers on a journey from discovery to the most recent observations made from space- and ground-based telescopes, and it will appeal to amateur and professional astronomers alike.
eBook
Uranus
Introduces Uranus, describing its physical features, its unusual sideways spin, and the rings and moons found around the planet.
Book
Atmospheric confinement of jet streams on Uranus and Neptune
On Uranus and Neptune, the measured fourth-order gravity harmonic,
J
4
, constrains the atmospheric dynamics to the outermost 0.15 per cent and 0.2 per cent, respectively, of the planetary mass, indicating that these dynamics are confined to a thin weather layer no more than 1,000 kilometres deep on both planets.
Climate runs shallow on Uranus and Neptune
The depth to which the atmospheric circulation and climate extends on the giant planets has been a subject of debate for several decades. On the basis of Voyager 2 and Hubble Space Telescope measurements of wind speed on Uranus and Neptune, combined with gravity field data and atmospheric modelling, Yohai Kaspi
et al
. calculate that the winds on both planets are confined to a thin 'weather layer' no more than 1,000 km deep. This finding implies that the dynamics controlling these winds derive from come from shallow processes rather than deep atmospheric circulation.
The methodology used here should also be applicable to the detailed gravity field data for Jupiter and Saturn anticipated from the low-flying Juno and Cassini orbiters.
The observed cloud-level atmospheric circulation on the outer planets of the Solar System is dominated by strong east–west jet streams. The depth of these winds is a crucial unknown in constraining their overall dynamics, energetics and internal structures. There are two approaches to explaining the existence of these strong winds. The first suggests that the jets are driven by shallow atmospheric processes near the surface
1
,
2
,
3
, whereas the second suggests that the atmospheric dynamics extend deeply into the planetary interiors
4
,
5
. Here we report that on Uranus and Neptune the depth of the atmospheric dynamics can be revealed by the planets’ respective gravity fields. We show that the measured fourth-order gravity harmonic,
J
4
, constrains the dynamics to the outermost 0.15 per cent of the total mass of Uranus and the outermost 0.2 per cent of the total mass of Neptune. This provides a stronger limit to the depth of the dynamical atmosphere than previously suggested
6
, and shows that the dynamics are confined to a thin weather layer no more than about 1,000 kilometres deep on both planets.
Journal Article
Uranus and Neptune
\"The most distant planets in our solar system, Uranus and Neptune were unknown by the ancients - Uranus was discovered in the 1780s and Neptune only in the 1840s. Our discovery and observation of both planets has been hampered by their sheer distance from Earth: there has only been one close encounter, Voyager 2 in the late 1980s. The Voyager mission revealed many enticing details about the planets and their moons, but also left many more questions unanswered. This book is an informative and accessible introduction to Uranus, Neptune and their moons. It takes the reader on a journey from discovery to the most recent observations made from space- and ground-based telescopes, and will appeal to amateur and professional astronomers alike\"--Publisher's description.
Book
Uranus
An introduction to the planet Uranus including the environment on Uranus, it's location in our solar system, how it was formed, and how we have explored it over the years.
Book
Destination Uranus! Rare chance to reach ice giants excites scientists
A planetary alignment provides a window to visit Uranus and Neptune — but time is tight.
A planetary alignment provides a window to visit Uranus and Neptune — but time is tight.
Journal Article
Journey to Uranus
Readers will explore Uranus, its place in the solar system, how it formed, its curious sideways rotation, its rocky moons, and much more.
Book
Tiny Moon Found Around Uranus
\"Uranus is a planet. It’s very far away. A team just found a new moon around Uranus. This is its 29th known moon! Experts used the James Webb Space Telescope (JWST). They looked at 10 images from the telescope. That’s how they found the moon. Scientists named it S/2025 U1.\" (News-O-Matic) Learn how scientists used the James Webb Space Telescope to discover a tiny new moon orbiting Uranus.
Web Resource